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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $175,231,980 | 558,592,684 | 558,592,684 |
| 2006 | $341,157,324 | 1,089,617,387 | 1,089,617,387 |
| 2007 | $384,351,798 | 1,152,662,482 | 1,152,662,482 |
| 2008 | $370,351,346 | 799,473,933 | 799,473,933 |
| 2009 | $363,459,824 | 621,262,328 | 621,262,328 |
| 2010 | $273,471,499 | 471,346,501 | 471,346,501 |
| 2011 | $216,046,879 | 314,649,971 | 314,649,971 |
Note: Quantity represents Weight in kilograms
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